I have not used that device,but you can try following-
set attribute in jad file MIDlet-info-URL:<your application download url>
in this case sign your application with certificate like verisign...

Which platform you are using S40 or S60? If it is S40 then you can update your application by selecting update version option from option menu where you application is installed.For this you neet to...

are you creating jar file by using obfusscation?If yes then try to create jar file without obfussacated package

Try to get filesize in long variable instead of using integer

try by compressing your jar file with obfusscation

You can use LWUIT library or polish for UI designing in j2me

what is symbian version of device? if updates are available then try to update device OS by using nokia suit and then try.

Have you putted your phone on silent mode and trying to play audio files?

For your second question
You can not use AT commands from J2ME

While sending SMS you can pass port number in connection String like ("sms://" + number +":1234")
on other side (receiver) receive SMS from same port number

For your shutter sound try with tunerControl if your device supports AMMS.

1) If you are developing application in J2ME then dont need to install any tool into your mobile
2)Can you elaborate more about your task of SMS uploading? Uploading means to upload to server or...

Yes you can

Do you mean that nokia mobile post request to server multiple times ,if response from server is not getting in 30 seconds? if yes then you can set timeout to httpconnection at ther time of opening...

are you testing on real device?if yes then check GPRS settings of device.

thanks vovandz !

right click on project->property->Application descriptor->select attributes tab->click on add->type Nokia-MIDlet-no-exit->set value as true->click ok

Oh,sorry my mistake,i forgot that you are exiting app by pressing red key of mobile,by pressing red key destroyApp will call by application manager with notifydestroyed.i think it is difficult to...

In canvas based apps,many thing you have to do manually,see link below for touch pad-
http://www.developer.nokia.com/Commu..._Touch_Devices

In point 1,what is happening?what error you are getting?

Yes,just used for pairing.

But at the time of firmware upgradation via OVI suit,it will ask you for backup.then simply say NO.

Have you written the code for such devices for canvas based apps?
if not then you can also do that activity,because as per your last post,touch devices(Dopod P660) which has a virtual keypad and...

Yes,because system (OS) will not understand that the output of virtual keyboard is to be given to your textfield !

but,how you know that mobile device is sending data properly via bluetooth to you second device?
I have communicated with bluetooth printer to print billing sleeps from mobile device,following is...